Health Minister Jim Wells
"The inspiration, determination and humour with which she conducted herself was remarkable and I hope we continue to raise awareness of the symptoms of ovarian cancer."
Deputy First Minister Martin McGuinness
"Sad to hear of the deaths of brave ovarian cancer campaigner Úna Crudden and my dear friend Nuala Fleming.#twofinewomen"
Sinn Fein MLA Maeve McLaughlin
"I met Una as part of her campaign and was struck by her bravery and determination. It is up to us all to ensure her legacy lives in an awareness of ovarian cancer."
Abuse victim and campaigner Mairia Cahill
"Una who made such a difference in cancer awareness. Proud to have known her."
BBCNI radio presenter Alan Simpson
What a lady, what a legacy. Cherish the memories. x #tealtakeover
DUP Alderman Brian Kingston
"Very sorry to hear of the death of Una, an enthusiastic and determined champion. At peace."
DUP East Belast MLA Judith Cochrane
"A remarkable woman who has done so much to raise awareness of ovarian cancer."
Sinn Fein's Niall Ó Donnghaile
"Una Crudden blazed a trail in not only defying her illness but also her passionately campaigning."
Roisin Foster, chief executive, Cancer Focus
"Una was a wonderful and inspiring person. We can't thank her enough."
SDLP health spokesperson Fearghal McKinney MLA
"Una's legacy is a new, lasting and sincere focus on action that we can all take to help those affected by cancer. We all owe her a great debt for that."